It's not enough to get rid of raw sewage by pumpingit out to sea.
仅用水泵将未经处理的污水排入海中是不够的。
《柯林斯英汉双解大词典》
2
Often the cheapest way to provide irrigation water in the dry tropics is through small-scale projects, such as gathering rainfall in depressions and pumpingit to nearby cropland.